The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2007
Filed:
Dec. 16, 2004
Tadahiro Ohmi, Sendai-shi, Mayagi, JP;
Masaaki Nagase, Osaka, JP;
Ryousuke Dohi, Osaka, JP;
Kouji Nishino, Osaka, JP;
Osamu Nakamura, Osaka, JP;
Tomio Uno, Osaka, JP;
Nobukazu Ikeda, Osaka, JP;
Tadahiro Ohmi, Sendai-shi, Mayagi, JP;
Masaaki Nagase, Osaka, JP;
Ryousuke Dohi, Osaka, JP;
Kouji Nishino, Osaka, JP;
Osamu Nakamura, Osaka, JP;
Tomio Uno, Osaka, JP;
Nobukazu Ikeda, Osaka, JP;
Fujikin Incorporated, Osaka, JP;
Other;
Abstract
A small hole diameter measuring apparatus including: a flow rate measurement section comprised of an automatic pressure control device which supplies a fluid to the inlet side of small holes in a plate while maintaining the outlet- and inlet-side pressures of the small holes in the critical state of the fluid and controlling the inlet-side pressure to a predetermined inlet-side pressure; a plate holding section comprised of a plate supporting device which rotatably holds the plate, and a test probe supporting device which supports a test probe so that the test probe is moved vertically and horizontally; and a control section comprised of a calculation and judgment part, which calculates the hole diameter during the supply of the fluid based upon the measured value of the flow rate from the flow rate measurement section, and an external output part, which outputs the calculated value to the outside.